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Finding the Fourth Proportional to 21,858.02, 32,787.05 and 9,369.98

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Solution

The fourth proportional to 21,858.02, 32,787.05 and 9,369.98 is: 14,054.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,858.02 : 32,787.05 = 9,369.98 : x
  2. Step 2: Convert to fraction form
    21,858.02/32,787.05 = 9,369.98/x
  3. Step 3: Cross multiply
    21,858.02x = 32,787.05 × 9,369.98
  4. Step 4: Simplify right side
    21,858.02x = 307,213,791.97
  5. Step 5: Solve for x
    x = 307,213,791.97/21,858.02
  6. Step 6: Final answer
    x = 14,054.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.